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Finding the Fourth Proportional to 695.98, 960.12 and 509.16

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Solution

The fourth proportional to 695.98, 960.12 and 509.16 is: 702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.98 : 960.12 = 509.16 : x
  2. Step 2: Convert to fraction form
    695.98/960.12 = 509.16/x
  3. Step 3: Cross multiply
    695.98x = 960.12 × 509.16
  4. Step 4: Simplify right side
    695.98x = 488,854.70
  5. Step 5: Solve for x
    x = 488,854.70/695.98
  6. Step 6: Final answer
    x = 702.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.