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Finding the Fourth Proportional to 946.11, 1,305.29 and 572.82

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Solution

The fourth proportional to 946.11, 1,305.29 and 572.82 is: 790.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.11 : 1,305.29 = 572.82 : x
  2. Step 2: Convert to fraction form
    946.11/1,305.29 = 572.82/x
  3. Step 3: Cross multiply
    946.11x = 1,305.29 × 572.82
  4. Step 4: Simplify right side
    946.11x = 747,693.35
  5. Step 5: Solve for x
    x = 747,693.35/946.11
  6. Step 6: Final answer
    x = 790.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.