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Finding the Fourth Proportional to 617.23, 851.18 and 477.14

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Solution

The fourth proportional to 617.23, 851.18 and 477.14 is: 657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.23 : 851.18 = 477.14 : x
  2. Step 2: Convert to fraction form
    617.23/851.18 = 477.14/x
  3. Step 3: Cross multiply
    617.23x = 851.18 × 477.14
  4. Step 4: Simplify right side
    617.23x = 406,125.38
  5. Step 5: Solve for x
    x = 406,125.38/617.23
  6. Step 6: Final answer
    x = 657.98

Related Problems

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Half scale
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Double scale
Find fourth proportional to 618.23, 852.55 and 478.14
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.