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Finding the Fourth Proportional to 1,342.80, 2,014.40 and 368.92

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Solution

The fourth proportional to 1,342.80, 2,014.40 and 368.92 is: 553.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.80 : 2,014.40 = 368.92 : x
  2. Step 2: Convert to fraction form
    1,342.80/2,014.40 = 368.92/x
  3. Step 3: Cross multiply
    1,342.80x = 2,014.40 × 368.92
  4. Step 4: Simplify right side
    1,342.80x = 743,152.45
  5. Step 5: Solve for x
    x = 743,152.45/1,342.80
  6. Step 6: Final answer
    x = 553.43

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1.5x scale

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.