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Finding the Fourth Proportional to 903.22, 1,246.54 and 530.32

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Solution

The fourth proportional to 903.22, 1,246.54 and 530.32 is: 731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.22 : 1,246.54 = 530.32 : x
  2. Step 2: Convert to fraction form
    903.22/1,246.54 = 530.32/x
  3. Step 3: Cross multiply
    903.22x = 1,246.54 × 530.32
  4. Step 4: Simplify right side
    903.22x = 661,065.09
  5. Step 5: Solve for x
    x = 661,065.09/903.22
  6. Step 6: Final answer
    x = 731.90

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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.