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Finding the Fourth Proportional to 1,557.41, 2,335.71 and 461.51

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Solution

The fourth proportional to 1,557.41, 2,335.71 and 461.51 is: 692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.41 : 2,335.71 = 461.51 : x
  2. Step 2: Convert to fraction form
    1,557.41/2,335.71 = 461.51/x
  3. Step 3: Cross multiply
    1,557.41x = 2,335.71 × 461.51
  4. Step 4: Simplify right side
    1,557.41x = 1,077,960.24
  5. Step 5: Solve for x
    x = 1,077,960.24/1,557.41
  6. Step 6: Final answer
    x = 692.15

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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.