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Finding the Fourth Proportional to 590.83, 890.66 and 551.18

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Solution

The fourth proportional to 590.83, 890.66 and 551.18 is: 830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.83 : 890.66 = 551.18 : x
  2. Step 2: Convert to fraction form
    590.83/890.66 = 551.18/x
  3. Step 3: Cross multiply
    590.83x = 890.66 × 551.18
  4. Step 4: Simplify right side
    590.83x = 490,915.36
  5. Step 5: Solve for x
    x = 490,915.36/590.83
  6. Step 6: Final answer
    x = 830.90

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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.