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Finding the Fourth Proportional to 713.36, 983.72 and 477.30

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Solution

The fourth proportional to 713.36, 983.72 and 477.30 is: 658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.36 : 983.72 = 477.30 : x
  2. Step 2: Convert to fraction form
    713.36/983.72 = 477.30/x
  3. Step 3: Cross multiply
    713.36x = 983.72 × 477.30
  4. Step 4: Simplify right side
    713.36x = 469,527.17
  5. Step 5: Solve for x
    x = 469,527.17/713.36
  6. Step 6: Final answer
    x = 658.20

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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.