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Finding the Fourth Proportional to 903.15, 1,246.03 and 529.99

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Solution

The fourth proportional to 903.15, 1,246.03 and 529.99 is: 731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.15 : 1,246.03 = 529.99 : x
  2. Step 2: Convert to fraction form
    903.15/1,246.03 = 529.99/x
  3. Step 3: Cross multiply
    903.15x = 1,246.03 × 529.99
  4. Step 4: Simplify right side
    903.15x = 660,379.00
  5. Step 5: Solve for x
    x = 660,379.00/903.15
  6. Step 6: Final answer
    x = 731.20

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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.