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Finding the Fourth Proportional to 955.88, 1,319.16 and 563.03

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Solution

The fourth proportional to 955.88, 1,319.16 and 563.03 is: 777.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.88 : 1,319.16 = 563.03 : x
  2. Step 2: Convert to fraction form
    955.88/1,319.16 = 563.03/x
  3. Step 3: Cross multiply
    955.88x = 1,319.16 × 563.03
  4. Step 4: Simplify right side
    955.88x = 742,720.06
  5. Step 5: Solve for x
    x = 742,720.06/955.88
  6. Step 6: Final answer
    x = 777.01

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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.