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Finding the Fourth Proportional to 695.63, 1,041.08 and 580.28

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Solution

The fourth proportional to 695.63, 1,041.08 and 580.28 is: 868.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.63 : 1,041.08 = 580.28 : x
  2. Step 2: Convert to fraction form
    695.63/1,041.08 = 580.28/x
  3. Step 3: Cross multiply
    695.63x = 1,041.08 × 580.28
  4. Step 4: Simplify right side
    695.63x = 604,109.80
  5. Step 5: Solve for x
    x = 604,109.80/695.63
  6. Step 6: Final answer
    x = 868.44

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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.