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Finding the Fourth Proportional to 1,347.68, 2,019.80 and 606.49

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Solution

The fourth proportional to 1,347.68, 2,019.80 and 606.49 is: 908.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.68 : 2,019.80 = 606.49 : x
  2. Step 2: Convert to fraction form
    1,347.68/2,019.80 = 606.49/x
  3. Step 3: Cross multiply
    1,347.68x = 2,019.80 × 606.49
  4. Step 4: Simplify right side
    1,347.68x = 1,224,985.47
  5. Step 5: Solve for x
    x = 1,224,985.47/1,347.68
  6. Step 6: Final answer
    x = 908.96

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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.