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Finding the Fourth Proportional to 500.76, 691.75 and 476.46

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Solution

The fourth proportional to 500.76, 691.75 and 476.46 is: 658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.76 : 691.75 = 476.46 : x
  2. Step 2: Convert to fraction form
    500.76/691.75 = 476.46/x
  3. Step 3: Cross multiply
    500.76x = 691.75 × 476.46
  4. Step 4: Simplify right side
    500.76x = 329,591.21
  5. Step 5: Solve for x
    x = 329,591.21/500.76
  6. Step 6: Final answer
    x = 658.18

Related Problems

Find fourth proportional to 250.38, 345.88 and 238.23
Half scale
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Double scale
Find fourth proportional to 501.76, 693.13 and 477.46
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.