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Finding the Fourth Proportional to 554.16, 759.21 and 533.40

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Solution

The fourth proportional to 554.16, 759.21 and 533.40 is: 730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.16 : 759.21 = 533.40 : x
  2. Step 2: Convert to fraction form
    554.16/759.21 = 533.40/x
  3. Step 3: Cross multiply
    554.16x = 759.21 × 533.40
  4. Step 4: Simplify right side
    554.16x = 404,962.61
  5. Step 5: Solve for x
    x = 404,962.61/554.16
  6. Step 6: Final answer
    x = 730.77

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.