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Finding the Fourth Proportional to 690.24, 952.88 and 524.48

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Solution

The fourth proportional to 690.24, 952.88 and 524.48 is: 724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.24 : 952.88 = 524.48 : x
  2. Step 2: Convert to fraction form
    690.24/952.88 = 524.48/x
  3. Step 3: Cross multiply
    690.24x = 952.88 × 524.48
  4. Step 4: Simplify right side
    690.24x = 499,766.50
  5. Step 5: Solve for x
    x = 499,766.50/690.24
  6. Step 6: Final answer
    x = 724.05

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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.