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Finding the Fourth Proportional to 920.37, 1,269.98 and 547.34

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Solution

The fourth proportional to 920.37, 1,269.98 and 547.34 is: 755.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.37 : 1,269.98 = 547.34 : x
  2. Step 2: Convert to fraction form
    920.37/1,269.98 = 547.34/x
  3. Step 3: Cross multiply
    920.37x = 1,269.98 × 547.34
  4. Step 4: Simplify right side
    920.37x = 695,101.77
  5. Step 5: Solve for x
    x = 695,101.77/920.37
  6. Step 6: Final answer
    x = 755.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.