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Finding the Fourth Proportional to 1,298.99, 1,948.16 and 374.54

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Solution

The fourth proportional to 1,298.99, 1,948.16 and 374.54 is: 561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.99 : 1,948.16 = 374.54 : x
  2. Step 2: Convert to fraction form
    1,298.99/1,948.16 = 374.54/x
  3. Step 3: Cross multiply
    1,298.99x = 1,948.16 × 374.54
  4. Step 4: Simplify right side
    1,298.99x = 729,652.23
  5. Step 5: Solve for x
    x = 729,652.23/1,298.99
  6. Step 6: Final answer
    x = 561.71

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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.