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Finding the Fourth Proportional to 584, 876.34 and 259.40

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Solution

The fourth proportional to 584, 876.34 and 259.40 is: 389.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    584 : 876.34 = 259.40 : x
  2. Step 2: Convert to fraction form
    584/876.34 = 259.40/x
  3. Step 3: Cross multiply
    584x = 876.34 × 259.40
  4. Step 4: Simplify right side
    584x = 227,322.60
  5. Step 5: Solve for x
    x = 227,322.60/584
  6. Step 6: Final answer
    x = 389.25

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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.