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Finding the Fourth Proportional to 903.32, 1,246.65 and 571.63

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Solution

The fourth proportional to 903.32, 1,246.65 and 571.63 is: 788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.32 : 1,246.65 = 571.63 : x
  2. Step 2: Convert to fraction form
    903.32/1,246.65 = 571.63/x
  3. Step 3: Cross multiply
    903.32x = 1,246.65 × 571.63
  4. Step 4: Simplify right side
    903.32x = 712,622.54
  5. Step 5: Solve for x
    x = 712,622.54/903.32
  6. Step 6: Final answer
    x = 788.89

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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.