Home / 1,038.55-1,433.19-572.80

Finding the Fourth Proportional to 1,038.55, 1,433.19 and 572.80

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Solution

The fourth proportional to 1,038.55, 1,433.19 and 572.80 is: 790.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.55 : 1,433.19 = 572.80 : x
  2. Step 2: Convert to fraction form
    1,038.55/1,433.19 = 572.80/x
  3. Step 3: Cross multiply
    1,038.55x = 1,433.19 × 572.80
  4. Step 4: Simplify right side
    1,038.55x = 820,931.23
  5. Step 5: Solve for x
    x = 820,931.23/1,038.55
  6. Step 6: Final answer
    x = 790.46

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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.