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Finding the Fourth Proportional to 1,050.27, 1,573.53 and 639.19

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Solution

The fourth proportional to 1,050.27, 1,573.53 and 639.19 is: 957.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.27 : 1,573.53 = 639.19 : x
  2. Step 2: Convert to fraction form
    1,050.27/1,573.53 = 639.19/x
  3. Step 3: Cross multiply
    1,050.27x = 1,573.53 × 639.19
  4. Step 4: Simplify right side
    1,050.27x = 1,005,784.21
  5. Step 5: Solve for x
    x = 1,005,784.21/1,050.27
  6. Step 6: Final answer
    x = 957.65

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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.