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Finding the Fourth Proportional to 585.59, 808.26 and 428.45

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Solution

The fourth proportional to 585.59, 808.26 and 428.45 is: 591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.59 : 808.26 = 428.45 : x
  2. Step 2: Convert to fraction form
    585.59/808.26 = 428.45/x
  3. Step 3: Cross multiply
    585.59x = 808.26 × 428.45
  4. Step 4: Simplify right side
    585.59x = 346,299.00
  5. Step 5: Solve for x
    x = 346,299.00/585.59
  6. Step 6: Final answer
    x = 591.37

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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.