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Finding the Fourth Proportional to 762.58, 1,143.66 and 372.37

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Solution

The fourth proportional to 762.58, 1,143.66 and 372.37 is: 558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.58 : 1,143.66 = 372.37 : x
  2. Step 2: Convert to fraction form
    762.58/1,143.66 = 372.37/x
  3. Step 3: Cross multiply
    762.58x = 1,143.66 × 372.37
  4. Step 4: Simplify right side
    762.58x = 425,864.67
  5. Step 5: Solve for x
    x = 425,864.67/762.58
  6. Step 6: Final answer
    x = 558.45

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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.