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Finding the Fourth Proportional to 1,160.01, 1,740.47 and 429.66

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Solution

The fourth proportional to 1,160.01, 1,740.47 and 429.66 is: 644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.01 : 1,740.47 = 429.66 : x
  2. Step 2: Convert to fraction form
    1,160.01/1,740.47 = 429.66/x
  3. Step 3: Cross multiply
    1,160.01x = 1,740.47 × 429.66
  4. Step 4: Simplify right side
    1,160.01x = 747,808.19
  5. Step 5: Solve for x
    x = 747,808.19/1,160.01
  6. Step 6: Final answer
    x = 644.66

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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.