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Finding the Fourth Proportional to 1,506.39, 2,259.05 and 640.77

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Solution

The fourth proportional to 1,506.39, 2,259.05 and 640.77 is: 960.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,506.39 : 2,259.05 = 640.77 : x
  2. Step 2: Convert to fraction form
    1,506.39/2,259.05 = 640.77/x
  3. Step 3: Cross multiply
    1,506.39x = 2,259.05 × 640.77
  4. Step 4: Simplify right side
    1,506.39x = 1,447,528.26
  5. Step 5: Solve for x
    x = 1,447,528.26/1,506.39
  6. Step 6: Final answer
    x = 960.93

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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.