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Finding the Fourth Proportional to 554.40, 826.70 and 527.15

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Solution

The fourth proportional to 554.40, 826.70 and 527.15 is: 786.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.40 : 826.70 = 527.15 : x
  2. Step 2: Convert to fraction form
    554.40/826.70 = 527.15/x
  3. Step 3: Cross multiply
    554.40x = 826.70 × 527.15
  4. Step 4: Simplify right side
    554.40x = 435,792.75
  5. Step 5: Solve for x
    x = 435,792.75/554.40
  6. Step 6: Final answer
    x = 786.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.