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Finding the Fourth Proportional to 903.42, 1,246.44 and 549.51

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Solution

The fourth proportional to 903.42, 1,246.44 and 549.51 is: 758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.42 : 1,246.44 = 549.51 : x
  2. Step 2: Convert to fraction form
    903.42/1,246.44 = 549.51/x
  3. Step 3: Cross multiply
    903.42x = 1,246.44 × 549.51
  4. Step 4: Simplify right side
    903.42x = 684,931.24
  5. Step 5: Solve for x
    x = 684,931.24/903.42
  6. Step 6: Final answer
    x = 758.15

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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.