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Finding the Fourth Proportional to 562.24, 838.40 and 523.28

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Solution

The fourth proportional to 562.24, 838.40 and 523.28 is: 780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.24 : 838.40 = 523.28 : x
  2. Step 2: Convert to fraction form
    562.24/838.40 = 523.28/x
  3. Step 3: Cross multiply
    562.24x = 838.40 × 523.28
  4. Step 4: Simplify right side
    562.24x = 438,717.95
  5. Step 5: Solve for x
    x = 438,717.95/562.24
  6. Step 6: Final answer
    x = 780.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.