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Finding the Fourth Proportional to 1,530.76, 2,295.85 and 434.86

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Solution

The fourth proportional to 1,530.76, 2,295.85 and 434.86 is: 652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.76 : 2,295.85 = 434.86 : x
  2. Step 2: Convert to fraction form
    1,530.76/2,295.85 = 434.86/x
  3. Step 3: Cross multiply
    1,530.76x = 2,295.85 × 434.86
  4. Step 4: Simplify right side
    1,530.76x = 998,373.33
  5. Step 5: Solve for x
    x = 998,373.33/1,530.76
  6. Step 6: Final answer
    x = 652.21

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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.