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Finding the Fourth Proportional to 953.30, 1,316.86 and 746.11

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Solution

The fourth proportional to 953.30, 1,316.86 and 746.11 is: 1,030.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.30 : 1,316.86 = 746.11 : x
  2. Step 2: Convert to fraction form
    953.30/1,316.86 = 746.11/x
  3. Step 3: Cross multiply
    953.30x = 1,316.86 × 746.11
  4. Step 4: Simplify right side
    953.30x = 982,522.20
  5. Step 5: Solve for x
    x = 982,522.20/953.30
  6. Step 6: Final answer
    x = 1,030.65

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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.