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Finding the Fourth Proportional to 526.63, 790.35 and 424.17

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Solution

The fourth proportional to 526.63, 790.35 and 424.17 is: 636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.63 : 790.35 = 424.17 : x
  2. Step 2: Convert to fraction form
    526.63/790.35 = 424.17/x
  3. Step 3: Cross multiply
    526.63x = 790.35 × 424.17
  4. Step 4: Simplify right side
    526.63x = 335,242.76
  5. Step 5: Solve for x
    x = 335,242.76/526.63
  6. Step 6: Final answer
    x = 636.58

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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.