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Finding the Fourth Proportional to 1,308.33, 1,962.68 and 615.06

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Solution

The fourth proportional to 1,308.33, 1,962.68 and 615.06 is: 922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.33 : 1,962.68 = 615.06 : x
  2. Step 2: Convert to fraction form
    1,308.33/1,962.68 = 615.06/x
  3. Step 3: Cross multiply
    1,308.33x = 1,962.68 × 615.06
  4. Step 4: Simplify right side
    1,308.33x = 1,207,162.89
  5. Step 5: Solve for x
    x = 1,207,162.89/1,308.33
  6. Step 6: Final answer
    x = 922.67

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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.