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Finding the Fourth Proportional to 554.64, 832.48 and 266.28

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Solution

The fourth proportional to 554.64, 832.48 and 266.28 is: 399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.64 : 832.48 = 266.28 : x
  2. Step 2: Convert to fraction form
    554.64/832.48 = 266.28/x
  3. Step 3: Cross multiply
    554.64x = 832.48 × 266.28
  4. Step 4: Simplify right side
    554.64x = 221,672.77
  5. Step 5: Solve for x
    x = 221,672.77/554.64
  6. Step 6: Final answer
    x = 399.67

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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.