Home / 1,020.89-1,531.93-371.67

Finding the Fourth Proportional to 1,020.89, 1,531.93 and 371.67

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Solution

The fourth proportional to 1,020.89, 1,531.93 and 371.67 is: 557.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.89 : 1,531.93 = 371.67 : x
  2. Step 2: Convert to fraction form
    1,020.89/1,531.93 = 371.67/x
  3. Step 3: Cross multiply
    1,020.89x = 1,531.93 × 371.67
  4. Step 4: Simplify right side
    1,020.89x = 569,372.42
  5. Step 5: Solve for x
    x = 569,372.42/1,020.89
  6. Step 6: Final answer
    x = 557.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.