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Finding the Fourth Proportional to 562.90, 776.76 and 342.16

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Solution

The fourth proportional to 562.90, 776.76 and 342.16 is: 472.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.90 : 776.76 = 342.16 : x
  2. Step 2: Convert to fraction form
    562.90/776.76 = 342.16/x
  3. Step 3: Cross multiply
    562.90x = 776.76 × 342.16
  4. Step 4: Simplify right side
    562.90x = 265,776.20
  5. Step 5: Solve for x
    x = 265,776.20/562.90
  6. Step 6: Final answer
    x = 472.16

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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.