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Finding the Fourth Proportional to 1,164.88, 1,746.28 and 434.49

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Solution

The fourth proportional to 1,164.88, 1,746.28 and 434.49 is: 651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.88 : 1,746.28 = 434.49 : x
  2. Step 2: Convert to fraction form
    1,164.88/1,746.28 = 434.49/x
  3. Step 3: Cross multiply
    1,164.88x = 1,746.28 × 434.49
  4. Step 4: Simplify right side
    1,164.88x = 758,741.20
  5. Step 5: Solve for x
    x = 758,741.20/1,164.88
  6. Step 6: Final answer
    x = 651.35

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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.