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Finding the Fourth Proportional to 527.55, 727.35 and 403.01

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Solution

The fourth proportional to 527.55, 727.35 and 403.01 is: 555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.55 : 727.35 = 403.01 : x
  2. Step 2: Convert to fraction form
    527.55/727.35 = 403.01/x
  3. Step 3: Cross multiply
    527.55x = 727.35 × 403.01
  4. Step 4: Simplify right side
    527.55x = 293,129.32
  5. Step 5: Solve for x
    x = 293,129.32/527.55
  6. Step 6: Final answer
    x = 555.64

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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.