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Finding the Fourth Proportional to 1,698.24, 2,548.48 and 929.28

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Solution

The fourth proportional to 1,698.24, 2,548.48 and 929.28 is: 1,394.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.24 : 2,548.48 = 929.28 : x
  2. Step 2: Convert to fraction form
    1,698.24/2,548.48 = 929.28/x
  3. Step 3: Cross multiply
    1,698.24x = 2,548.48 × 929.28
  4. Step 4: Simplify right side
    1,698.24x = 2,368,251.49
  5. Step 5: Solve for x
    x = 2,368,251.49/1,698.24
  6. Step 6: Final answer
    x = 1,394.53

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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.