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Finding the Fourth Proportional to 1,145.74, 1,582.06 and 883.30

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Solution

The fourth proportional to 1,145.74, 1,582.06 and 883.30 is: 1,219.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.74 : 1,582.06 = 883.30 : x
  2. Step 2: Convert to fraction form
    1,145.74/1,582.06 = 883.30/x
  3. Step 3: Cross multiply
    1,145.74x = 1,582.06 × 883.30
  4. Step 4: Simplify right side
    1,145.74x = 1,397,433.60
  5. Step 5: Solve for x
    x = 1,397,433.60/1,145.74
  6. Step 6: Final answer
    x = 1,219.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.