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Finding the Fourth Proportional to 562.08, 775.56 and 313.38

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Solution

The fourth proportional to 562.08, 775.56 and 313.38 is: 432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.08 : 775.56 = 313.38 : x
  2. Step 2: Convert to fraction form
    562.08/775.56 = 313.38/x
  3. Step 3: Cross multiply
    562.08x = 775.56 × 313.38
  4. Step 4: Simplify right side
    562.08x = 243,044.99
  5. Step 5: Solve for x
    x = 243,044.99/562.08
  6. Step 6: Final answer
    x = 432.40

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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.