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Finding the Fourth Proportional to 373.71, 561.77 and 354.51

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Solution

The fourth proportional to 373.71, 561.77 and 354.51 is: 532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.71 : 561.77 = 354.51 : x
  2. Step 2: Convert to fraction form
    373.71/561.77 = 354.51/x
  3. Step 3: Cross multiply
    373.71x = 561.77 × 354.51
  4. Step 4: Simplify right side
    373.71x = 199,151.31
  5. Step 5: Solve for x
    x = 199,151.31/373.71
  6. Step 6: Final answer
    x = 532.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.