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Finding the Fourth Proportional to 373.89, 560.77 and 99.98

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Solution

The fourth proportional to 373.89, 560.77 and 99.98 is: 149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.89 : 560.77 = 99.98 : x
  2. Step 2: Convert to fraction form
    373.89/560.77 = 99.98/x
  3. Step 3: Cross multiply
    373.89x = 560.77 × 99.98
  4. Step 4: Simplify right side
    373.89x = 56,065.28
  5. Step 5: Solve for x
    x = 56,065.28/373.89
  6. Step 6: Final answer
    x = 149.95

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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.