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Finding the Fourth Proportional to 445.61, 614.93 and 259.17

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Solution

The fourth proportional to 445.61, 614.93 and 259.17 is: 357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.61 : 614.93 = 259.17 : x
  2. Step 2: Convert to fraction form
    445.61/614.93 = 259.17/x
  3. Step 3: Cross multiply
    445.61x = 614.93 × 259.17
  4. Step 4: Simplify right side
    445.61x = 159,370.11
  5. Step 5: Solve for x
    x = 159,370.11/445.61
  6. Step 6: Final answer
    x = 357.65

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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.