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Finding the Fourth Proportional to 1,628.90, 2,444.27 and 655.69

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Solution

The fourth proportional to 1,628.90, 2,444.27 and 655.69 is: 983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.90 : 2,444.27 = 655.69 : x
  2. Step 2: Convert to fraction form
    1,628.90/2,444.27 = 655.69/x
  3. Step 3: Cross multiply
    1,628.90x = 2,444.27 × 655.69
  4. Step 4: Simplify right side
    1,628.90x = 1,602,683.40
  5. Step 5: Solve for x
    x = 1,602,683.40/1,628.90
  6. Step 6: Final answer
    x = 983.91

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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.