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Finding the Fourth Proportional to 614.76, 848.40 and 417.94

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Solution

The fourth proportional to 614.76, 848.40 and 417.94 is: 576.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.76 : 848.40 = 417.94 : x
  2. Step 2: Convert to fraction form
    614.76/848.40 = 417.94/x
  3. Step 3: Cross multiply
    614.76x = 848.40 × 417.94
  4. Step 4: Simplify right side
    614.76x = 354,580.30
  5. Step 5: Solve for x
    x = 354,580.30/614.76
  6. Step 6: Final answer
    x = 576.78

Related Problems

Find fourth proportional to 307.38, 424.20 and 208.97
Half scale
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Double scale
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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.