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Finding the Fourth Proportional to 292.65, 403.76 and 187.76

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Solution

The fourth proportional to 292.65, 403.76 and 187.76 is: 259.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.65 : 403.76 = 187.76 : x
  2. Step 2: Convert to fraction form
    292.65/403.76 = 187.76/x
  3. Step 3: Cross multiply
    292.65x = 403.76 × 187.76
  4. Step 4: Simplify right side
    292.65x = 75,807.02
  5. Step 5: Solve for x
    x = 75,807.02/292.65
  6. Step 6: Final answer
    x = 259.04

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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.