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Finding the Fourth Proportional to 373.55, 562.34 and 320.69

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Solution

The fourth proportional to 373.55, 562.34 and 320.69 is: 482.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.55 : 562.34 = 320.69 : x
  2. Step 2: Convert to fraction form
    373.55/562.34 = 320.69/x
  3. Step 3: Cross multiply
    373.55x = 562.34 × 320.69
  4. Step 4: Simplify right side
    373.55x = 180,339.02
  5. Step 5: Solve for x
    x = 180,339.02/373.55
  6. Step 6: Final answer
    x = 482.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.