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Finding the Fourth Proportional to 1,164.48, 1,747.30 and 434.32

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Solution

The fourth proportional to 1,164.48, 1,747.30 and 434.32 is: 651.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.48 : 1,747.30 = 434.32 : x
  2. Step 2: Convert to fraction form
    1,164.48/1,747.30 = 434.32/x
  3. Step 3: Cross multiply
    1,164.48x = 1,747.30 × 434.32
  4. Step 4: Simplify right side
    1,164.48x = 758,887.34
  5. Step 5: Solve for x
    x = 758,887.34/1,164.48
  6. Step 6: Final answer
    x = 651.70

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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.