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Finding the Fourth Proportional to 1,557.05, 2,334.89 and 461.48

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Solution

The fourth proportional to 1,557.05, 2,334.89 and 461.48 is: 692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.05 : 2,334.89 = 461.48 : x
  2. Step 2: Convert to fraction form
    1,557.05/2,334.89 = 461.48/x
  3. Step 3: Cross multiply
    1,557.05x = 2,334.89 × 461.48
  4. Step 4: Simplify right side
    1,557.05x = 1,077,491.06
  5. Step 5: Solve for x
    x = 1,077,491.06/1,557.05
  6. Step 6: Final answer
    x = 692.01

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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.