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Finding the Fourth Proportional to 988.06, 1,362.54 and 595.12

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Solution

The fourth proportional to 988.06, 1,362.54 and 595.12 is: 820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.06 : 1,362.54 = 595.12 : x
  2. Step 2: Convert to fraction form
    988.06/1,362.54 = 595.12/x
  3. Step 3: Cross multiply
    988.06x = 1,362.54 × 595.12
  4. Step 4: Simplify right side
    988.06x = 810,874.80
  5. Step 5: Solve for x
    x = 810,874.80/988.06
  6. Step 6: Final answer
    x = 820.67

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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.