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Finding the Fourth Proportional to 695.03, 1,041.64 and 511.57

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Solution

The fourth proportional to 695.03, 1,041.64 and 511.57 is: 766.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.03 : 1,041.64 = 511.57 : x
  2. Step 2: Convert to fraction form
    695.03/1,041.64 = 511.57/x
  3. Step 3: Cross multiply
    695.03x = 1,041.64 × 511.57
  4. Step 4: Simplify right side
    695.03x = 532,864.01
  5. Step 5: Solve for x
    x = 532,864.01/695.03
  6. Step 6: Final answer
    x = 766.68

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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.