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Finding the Fourth Proportional to 708.56, 1,061.22 and 464.48

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Solution

The fourth proportional to 708.56, 1,061.22 and 464.48 is: 695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.56 : 1,061.22 = 464.48 : x
  2. Step 2: Convert to fraction form
    708.56/1,061.22 = 464.48/x
  3. Step 3: Cross multiply
    708.56x = 1,061.22 × 464.48
  4. Step 4: Simplify right side
    708.56x = 492,915.47
  5. Step 5: Solve for x
    x = 492,915.47/708.56
  6. Step 6: Final answer
    x = 695.66

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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.