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Finding the Fourth Proportional to 946.04, 1,305.72 and 553.19

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Solution

The fourth proportional to 946.04, 1,305.72 and 553.19 is: 763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.04 : 1,305.72 = 553.19 : x
  2. Step 2: Convert to fraction form
    946.04/1,305.72 = 553.19/x
  3. Step 3: Cross multiply
    946.04x = 1,305.72 × 553.19
  4. Step 4: Simplify right side
    946.04x = 722,304.72
  5. Step 5: Solve for x
    x = 722,304.72/946.04
  6. Step 6: Final answer
    x = 763.51

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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.