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Finding the Fourth Proportional to 903.24, 1,246.56 and 609.12

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Solution

The fourth proportional to 903.24, 1,246.56 and 609.12 is: 840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.24 : 1,246.56 = 609.12 : x
  2. Step 2: Convert to fraction form
    903.24/1,246.56 = 609.12/x
  3. Step 3: Cross multiply
    903.24x = 1,246.56 × 609.12
  4. Step 4: Simplify right side
    903.24x = 759,304.63
  5. Step 5: Solve for x
    x = 759,304.63/903.24
  6. Step 6: Final answer
    x = 840.65

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Double scale
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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.