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Finding the Fourth Proportional to 901.35, 1,347.35 and 879.48

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Solution

The fourth proportional to 901.35, 1,347.35 and 879.48 is: 1,314.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.35 : 1,347.35 = 879.48 : x
  2. Step 2: Convert to fraction form
    901.35/1,347.35 = 879.48/x
  3. Step 3: Cross multiply
    901.35x = 1,347.35 × 879.48
  4. Step 4: Simplify right side
    901.35x = 1,184,962.98
  5. Step 5: Solve for x
    x = 1,184,962.98/901.35
  6. Step 6: Final answer
    x = 1,314.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.