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Finding the Fourth Proportional to 956.39, 1,319.47 and 625.00

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Solution

The fourth proportional to 956.39, 1,319.47 and 625.00 is: 862.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.39 : 1,319.47 = 625.00 : x
  2. Step 2: Convert to fraction form
    956.39/1,319.47 = 625.00/x
  3. Step 3: Cross multiply
    956.39x = 1,319.47 × 625.00
  4. Step 4: Simplify right side
    956.39x = 824,674.83
  5. Step 5: Solve for x
    x = 824,674.83/956.39
  6. Step 6: Final answer
    x = 862.28

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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.