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Finding the Fourth Proportional to 746.07, 1,123.58 and 631.28

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Solution

The fourth proportional to 746.07, 1,123.58 and 631.28 is: 950.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.07 : 1,123.58 = 631.28 : x
  2. Step 2: Convert to fraction form
    746.07/1,123.58 = 631.28/x
  3. Step 3: Cross multiply
    746.07x = 1,123.58 × 631.28
  4. Step 4: Simplify right side
    746.07x = 709,284.81
  5. Step 5: Solve for x
    x = 709,284.81/746.07
  6. Step 6: Final answer
    x = 950.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.