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Finding the Fourth Proportional to 1,302.85, 1,796.07 and 929.19

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Solution

The fourth proportional to 1,302.85, 1,796.07 and 929.19 is: 1,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.85 : 1,796.07 = 929.19 : x
  2. Step 2: Convert to fraction form
    1,302.85/1,796.07 = 929.19/x
  3. Step 3: Cross multiply
    1,302.85x = 1,796.07 × 929.19
  4. Step 4: Simplify right side
    1,302.85x = 1,668,890.28
  5. Step 5: Solve for x
    x = 1,668,890.28/1,302.85
  6. Step 6: Final answer
    x = 1,280.95

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Half scale
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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.