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Finding the Fourth Proportional to 476.76, 715.12 and 134.76

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Solution

The fourth proportional to 476.76, 715.12 and 134.76 is: 202.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.76 : 715.12 = 134.76 : x
  2. Step 2: Convert to fraction form
    476.76/715.12 = 134.76/x
  3. Step 3: Cross multiply
    476.76x = 715.12 × 134.76
  4. Step 4: Simplify right side
    476.76x = 96,369.57
  5. Step 5: Solve for x
    x = 96,369.57/476.76
  6. Step 6: Final answer
    x = 202.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.