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Finding the Fourth Proportional to 58.03, 79.99 and 50.64

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Solution

The fourth proportional to 58.03, 79.99 and 50.64 is: 69.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.03 : 79.99 = 50.64 : x
  2. Step 2: Convert to fraction form
    58.03/79.99 = 50.64/x
  3. Step 3: Cross multiply
    58.03x = 79.99 × 50.64
  4. Step 4: Simplify right side
    58.03x = 4,050.69
  5. Step 5: Solve for x
    x = 4,050.69/58.03
  6. Step 6: Final answer
    x = 69.80

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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.