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Finding the Fourth Proportional to 530.81, 796.05 and 415.47

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Solution

The fourth proportional to 530.81, 796.05 and 415.47 is: 623.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.81 : 796.05 = 415.47 : x
  2. Step 2: Convert to fraction form
    530.81/796.05 = 415.47/x
  3. Step 3: Cross multiply
    530.81x = 796.05 × 415.47
  4. Step 4: Simplify right side
    530.81x = 330,734.89
  5. Step 5: Solve for x
    x = 330,734.89/530.81
  6. Step 6: Final answer
    x = 623.08

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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.