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Finding the Fourth Proportional to 562.77, 838.28 and 542.70

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Solution

The fourth proportional to 562.77, 838.28 and 542.70 is: 808.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.77 : 838.28 = 542.70 : x
  2. Step 2: Convert to fraction form
    562.77/838.28 = 542.70/x
  3. Step 3: Cross multiply
    562.77x = 838.28 × 542.70
  4. Step 4: Simplify right side
    562.77x = 454,931.84
  5. Step 5: Solve for x
    x = 454,931.84/562.77
  6. Step 6: Final answer
    x = 808.38

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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.