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Finding the Fourth Proportional to 372.51, 559.08 and 291.87

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Solution

The fourth proportional to 372.51, 559.08 and 291.87 is: 438.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.51 : 559.08 = 291.87 : x
  2. Step 2: Convert to fraction form
    372.51/559.08 = 291.87/x
  3. Step 3: Cross multiply
    372.51x = 559.08 × 291.87
  4. Step 4: Simplify right side
    372.51x = 163,178.68
  5. Step 5: Solve for x
    x = 163,178.68/372.51
  6. Step 6: Final answer
    x = 438.05

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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.