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Finding the Fourth Proportional to 1,188.32, 1,782.50 and 366.59

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Solution

The fourth proportional to 1,188.32, 1,782.50 and 366.59 is: 549.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188.32 : 1,782.50 = 366.59 : x
  2. Step 2: Convert to fraction form
    1,188.32/1,782.50 = 366.59/x
  3. Step 3: Cross multiply
    1,188.32x = 1,782.50 × 366.59
  4. Step 4: Simplify right side
    1,188.32x = 653,443.99
  5. Step 5: Solve for x
    x = 653,443.99/1,188.32
  6. Step 6: Final answer
    x = 549.89

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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.