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Finding the Fourth Proportional to 476.90, 715.29 and 130.18

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Solution

The fourth proportional to 476.90, 715.29 and 130.18 is: 195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.90 : 715.29 = 130.18 : x
  2. Step 2: Convert to fraction form
    476.90/715.29 = 130.18/x
  3. Step 3: Cross multiply
    476.90x = 715.29 × 130.18
  4. Step 4: Simplify right side
    476.90x = 93,117.89
  5. Step 5: Solve for x
    x = 93,117.89/476.90
  6. Step 6: Final answer
    x = 195.25

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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.