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Finding the Fourth Proportional to 614.17, 920.48 and 288.85

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Solution

The fourth proportional to 614.17, 920.48 and 288.85 is: 432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.17 : 920.48 = 288.85 : x
  2. Step 2: Convert to fraction form
    614.17/920.48 = 288.85/x
  3. Step 3: Cross multiply
    614.17x = 920.48 × 288.85
  4. Step 4: Simplify right side
    614.17x = 265,880.65
  5. Step 5: Solve for x
    x = 265,880.65/614.17
  6. Step 6: Final answer
    x = 432.91

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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.