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Finding the Fourth Proportional to 601.90, 904.20 and 585.70

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Solution

The fourth proportional to 601.90, 904.20 and 585.70 is: 879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.90 : 904.20 = 585.70 : x
  2. Step 2: Convert to fraction form
    601.90/904.20 = 585.70/x
  3. Step 3: Cross multiply
    601.90x = 904.20 × 585.70
  4. Step 4: Simplify right side
    601.90x = 529,589.94
  5. Step 5: Solve for x
    x = 529,589.94/601.90
  6. Step 6: Final answer
    x = 879.86

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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.