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Finding the Fourth Proportional to 740.65, 1,022.30 and 460.71

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Solution

The fourth proportional to 740.65, 1,022.30 and 460.71 is: 635.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.65 : 1,022.30 = 460.71 : x
  2. Step 2: Convert to fraction form
    740.65/1,022.30 = 460.71/x
  3. Step 3: Cross multiply
    740.65x = 1,022.30 × 460.71
  4. Step 4: Simplify right side
    740.65x = 470,986.27
  5. Step 5: Solve for x
    x = 470,986.27/740.65
  6. Step 6: Final answer
    x = 635.91

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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.