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Finding the Fourth Proportional to 1,059.93, 1,588.88 and 763.20

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Solution

The fourth proportional to 1,059.93, 1,588.88 and 763.20 is: 1,144.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.93 : 1,588.88 = 763.20 : x
  2. Step 2: Convert to fraction form
    1,059.93/1,588.88 = 763.20/x
  3. Step 3: Cross multiply
    1,059.93x = 1,588.88 × 763.20
  4. Step 4: Simplify right side
    1,059.93x = 1,212,635.12
  5. Step 5: Solve for x
    x = 1,212,635.12/1,059.93
  6. Step 6: Final answer
    x = 1,144.07

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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.