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Finding the Fourth Proportional to 946.46, 1,421.04 and 580.14

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Solution

The fourth proportional to 946.46, 1,421.04 and 580.14 is: 871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.46 : 1,421.04 = 580.14 : x
  2. Step 2: Convert to fraction form
    946.46/1,421.04 = 580.14/x
  3. Step 3: Cross multiply
    946.46x = 1,421.04 × 580.14
  4. Step 4: Simplify right side
    946.46x = 824,402.15
  5. Step 5: Solve for x
    x = 824,402.15/946.46
  6. Step 6: Final answer
    x = 871.04

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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.