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Finding the Fourth Proportional to 582.38, 873.44 and 485.50

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Solution

The fourth proportional to 582.38, 873.44 and 485.50 is: 728.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.38 : 873.44 = 485.50 : x
  2. Step 2: Convert to fraction form
    582.38/873.44 = 485.50/x
  3. Step 3: Cross multiply
    582.38x = 873.44 × 485.50
  4. Step 4: Simplify right side
    582.38x = 424,055.12
  5. Step 5: Solve for x
    x = 424,055.12/582.38
  6. Step 6: Final answer
    x = 728.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.