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Finding the Fourth Proportional to 1,314.85, 1,970.57 and 533.94

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Solution

The fourth proportional to 1,314.85, 1,970.57 and 533.94 is: 800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.85 : 1,970.57 = 533.94 : x
  2. Step 2: Convert to fraction form
    1,314.85/1,970.57 = 533.94/x
  3. Step 3: Cross multiply
    1,314.85x = 1,970.57 × 533.94
  4. Step 4: Simplify right side
    1,314.85x = 1,052,156.64
  5. Step 5: Solve for x
    x = 1,052,156.64/1,314.85
  6. Step 6: Final answer
    x = 800.21

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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.