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Finding the Fourth Proportional to 562.08, 838.92 and 479.28

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Solution

The fourth proportional to 562.08, 838.92 and 479.28 is: 715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.08 : 838.92 = 479.28 : x
  2. Step 2: Convert to fraction form
    562.08/838.92 = 479.28/x
  3. Step 3: Cross multiply
    562.08x = 838.92 × 479.28
  4. Step 4: Simplify right side
    562.08x = 402,077.58
  5. Step 5: Solve for x
    x = 402,077.58/562.08
  6. Step 6: Final answer
    x = 715.34

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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.