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Finding the Fourth Proportional to 903.65, 1,246.88 and 549.53

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Solution

The fourth proportional to 903.65, 1,246.88 and 549.53 is: 758.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.65 : 1,246.88 = 549.53 : x
  2. Step 2: Convert to fraction form
    903.65/1,246.88 = 549.53/x
  3. Step 3: Cross multiply
    903.65x = 1,246.88 × 549.53
  4. Step 4: Simplify right side
    903.65x = 685,193.11
  5. Step 5: Solve for x
    x = 685,193.11/903.65
  6. Step 6: Final answer
    x = 758.25

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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.