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Finding the Fourth Proportional to 1,165.35, 1,746.48 and 434.19

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Solution

The fourth proportional to 1,165.35, 1,746.48 and 434.19 is: 650.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.35 : 1,746.48 = 434.19 : x
  2. Step 2: Convert to fraction form
    1,165.35/1,746.48 = 434.19/x
  3. Step 3: Cross multiply
    1,165.35x = 1,746.48 × 434.19
  4. Step 4: Simplify right side
    1,165.35x = 758,304.15
  5. Step 5: Solve for x
    x = 758,304.15/1,165.35
  6. Step 6: Final answer
    x = 650.71

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Double scale
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1.5x scale

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.