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Finding the Fourth Proportional to 903.26, 1,246.50 and 530.16

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Solution

The fourth proportional to 903.26, 1,246.50 and 530.16 is: 731.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.26 : 1,246.50 = 530.16 : x
  2. Step 2: Convert to fraction form
    903.26/1,246.50 = 530.16/x
  3. Step 3: Cross multiply
    903.26x = 1,246.50 × 530.16
  4. Step 4: Simplify right side
    903.26x = 660,844.44
  5. Step 5: Solve for x
    x = 660,844.44/903.26
  6. Step 6: Final answer
    x = 731.63

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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.