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Finding the Fourth Proportional to 903.27, 1,246.65 and 655.72

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Solution

The fourth proportional to 903.27, 1,246.65 and 655.72 is: 904.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.27 : 1,246.65 = 655.72 : x
  2. Step 2: Convert to fraction form
    903.27/1,246.65 = 655.72/x
  3. Step 3: Cross multiply
    903.27x = 1,246.65 × 655.72
  4. Step 4: Simplify right side
    903.27x = 817,453.34
  5. Step 5: Solve for x
    x = 817,453.34/903.27
  6. Step 6: Final answer
    x = 904.99

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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.