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Finding the Fourth Proportional to 740.17, 1,021.56 and 441.46

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Solution

The fourth proportional to 740.17, 1,021.56 and 441.46 is: 609.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.17 : 1,021.56 = 441.46 : x
  2. Step 2: Convert to fraction form
    740.17/1,021.56 = 441.46/x
  3. Step 3: Cross multiply
    740.17x = 1,021.56 × 441.46
  4. Step 4: Simplify right side
    740.17x = 450,970.56
  5. Step 5: Solve for x
    x = 450,970.56/740.17
  6. Step 6: Final answer
    x = 609.28

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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.