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Finding the Fourth Proportional to 956.17, 1,319.51 and 558.10

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Solution

The fourth proportional to 956.17, 1,319.51 and 558.10 is: 770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.17 : 1,319.51 = 558.10 : x
  2. Step 2: Convert to fraction form
    956.17/1,319.51 = 558.10/x
  3. Step 3: Cross multiply
    956.17x = 1,319.51 × 558.10
  4. Step 4: Simplify right side
    956.17x = 736,418.53
  5. Step 5: Solve for x
    x = 736,418.53/956.17
  6. Step 6: Final answer
    x = 770.18

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Double scale
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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.