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Finding the Fourth Proportional to 615.44, 848.76 and 440.48

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Solution

The fourth proportional to 615.44, 848.76 and 440.48 is: 607.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.44 : 848.76 = 440.48 : x
  2. Step 2: Convert to fraction form
    615.44/848.76 = 440.48/x
  3. Step 3: Cross multiply
    615.44x = 848.76 × 440.48
  4. Step 4: Simplify right side
    615.44x = 373,861.80
  5. Step 5: Solve for x
    x = 373,861.80/615.44
  6. Step 6: Final answer
    x = 607.47

Related Problems

Find fourth proportional to 307.72, 424.38 and 220.24
Half scale
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Double scale
Find fourth proportional to 616.44, 850.14 and 441.48
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.