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Finding the Fourth Proportional to 695.18, 1,041.14 and 646.58

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Solution

The fourth proportional to 695.18, 1,041.14 and 646.58 is: 968.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.18 : 1,041.14 = 646.58 : x
  2. Step 2: Convert to fraction form
    695.18/1,041.14 = 646.58/x
  3. Step 3: Cross multiply
    695.18x = 1,041.14 × 646.58
  4. Step 4: Simplify right side
    695.18x = 673,180.30
  5. Step 5: Solve for x
    x = 673,180.30/695.18
  6. Step 6: Final answer
    x = 968.35

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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.