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Finding the Fourth Proportional to 1,437.35, 2,156.32 and 512.98

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Solution

The fourth proportional to 1,437.35, 2,156.32 and 512.98 is: 769.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.35 : 2,156.32 = 512.98 : x
  2. Step 2: Convert to fraction form
    1,437.35/2,156.32 = 512.98/x
  3. Step 3: Cross multiply
    1,437.35x = 2,156.32 × 512.98
  4. Step 4: Simplify right side
    1,437.35x = 1,106,156.41
  5. Step 5: Solve for x
    x = 1,106,156.41/1,437.35
  6. Step 6: Final answer
    x = 769.58

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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.