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Finding the Fourth Proportional to 291.18, 438.75 and 240.95

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Solution

The fourth proportional to 291.18, 438.75 and 240.95 is: 363.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.18 : 438.75 = 240.95 : x
  2. Step 2: Convert to fraction form
    291.18/438.75 = 240.95/x
  3. Step 3: Cross multiply
    291.18x = 438.75 × 240.95
  4. Step 4: Simplify right side
    291.18x = 105,715.66
  5. Step 5: Solve for x
    x = 105,715.66/291.18
  6. Step 6: Final answer
    x = 363.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.