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Finding the Fourth Proportional to 562.03, 775.59 and 313.39

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Solution

The fourth proportional to 562.03, 775.59 and 313.39 is: 432.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.03 : 775.59 = 313.39 : x
  2. Step 2: Convert to fraction form
    562.03/775.59 = 313.39/x
  3. Step 3: Cross multiply
    562.03x = 775.59 × 313.39
  4. Step 4: Simplify right side
    562.03x = 243,064.57
  5. Step 5: Solve for x
    x = 243,064.57/562.03
  6. Step 6: Final answer
    x = 432.47

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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.