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Finding the Fourth Proportional to 292.29, 437.91 and 155.40

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Solution

The fourth proportional to 292.29, 437.91 and 155.40 is: 232.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.29 : 437.91 = 155.40 : x
  2. Step 2: Convert to fraction form
    292.29/437.91 = 155.40/x
  3. Step 3: Cross multiply
    292.29x = 437.91 × 155.40
  4. Step 4: Simplify right side
    292.29x = 68,051.21
  5. Step 5: Solve for x
    x = 68,051.21/292.29
  6. Step 6: Final answer
    x = 232.82

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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.