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Finding the Fourth Proportional to 948.70, 1,309.19 and 576.17

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Solution

The fourth proportional to 948.70, 1,309.19 and 576.17 is: 795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.70 : 1,309.19 = 576.17 : x
  2. Step 2: Convert to fraction form
    948.70/1,309.19 = 576.17/x
  3. Step 3: Cross multiply
    948.70x = 1,309.19 × 576.17
  4. Step 4: Simplify right side
    948.70x = 754,316.00
  5. Step 5: Solve for x
    x = 754,316.00/948.70
  6. Step 6: Final answer
    x = 795.10

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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.