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Finding the Fourth Proportional to 585.91, 882.89 and 485.45

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Solution

The fourth proportional to 585.91, 882.89 and 485.45 is: 731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.91 : 882.89 = 485.45 : x
  2. Step 2: Convert to fraction form
    585.91/882.89 = 485.45/x
  3. Step 3: Cross multiply
    585.91x = 882.89 × 485.45
  4. Step 4: Simplify right side
    585.91x = 428,598.95
  5. Step 5: Solve for x
    x = 428,598.95/585.91
  6. Step 6: Final answer
    x = 731.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.