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Finding the Fourth Proportional to 923.61, 1,274.59 and 525.23

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Solution

The fourth proportional to 923.61, 1,274.59 and 525.23 is: 724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.61 : 1,274.59 = 525.23 : x
  2. Step 2: Convert to fraction form
    923.61/1,274.59 = 525.23/x
  3. Step 3: Cross multiply
    923.61x = 1,274.59 × 525.23
  4. Step 4: Simplify right side
    923.61x = 669,443.91
  5. Step 5: Solve for x
    x = 669,443.91/923.61
  6. Step 6: Final answer
    x = 724.81

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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.