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Finding the Fourth Proportional to 1,503.51, 2,255.36 and 578.94

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Solution

The fourth proportional to 1,503.51, 2,255.36 and 578.94 is: 868.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.51 : 2,255.36 = 578.94 : x
  2. Step 2: Convert to fraction form
    1,503.51/2,255.36 = 578.94/x
  3. Step 3: Cross multiply
    1,503.51x = 2,255.36 × 578.94
  4. Step 4: Simplify right side
    1,503.51x = 1,305,715.22
  5. Step 5: Solve for x
    x = 1,305,715.22/1,503.51
  6. Step 6: Final answer
    x = 868.44

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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.