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Finding the Fourth Proportional to 614.64, 848.16 and 440.76

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Solution

The fourth proportional to 614.64, 848.16 and 440.76 is: 608.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.64 : 848.16 = 440.76 : x
  2. Step 2: Convert to fraction form
    614.64/848.16 = 440.76/x
  3. Step 3: Cross multiply
    614.64x = 848.16 × 440.76
  4. Step 4: Simplify right side
    614.64x = 373,835.00
  5. Step 5: Solve for x
    x = 373,835.00/614.64
  6. Step 6: Final answer
    x = 608.22

Related Problems

Find fourth proportional to 307.32, 424.08 and 220.38
Half scale
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Double scale
Find fourth proportional to 615.64, 849.54 and 441.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.