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Finding the Fourth Proportional to 956.24, 1,319.48 and 563.20

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Solution

The fourth proportional to 956.24, 1,319.48 and 563.20 is: 777.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.24 : 1,319.48 = 563.20 : x
  2. Step 2: Convert to fraction form
    956.24/1,319.48 = 563.20/x
  3. Step 3: Cross multiply
    956.24x = 1,319.48 × 563.20
  4. Step 4: Simplify right side
    956.24x = 743,131.14
  5. Step 5: Solve for x
    x = 743,131.14/956.24
  6. Step 6: Final answer
    x = 777.14

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1.5x scale

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.