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Finding the Fourth Proportional to 530.44, 793.74 and 312.80

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Solution

The fourth proportional to 530.44, 793.74 and 312.80 is: 468.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.44 : 793.74 = 312.80 : x
  2. Step 2: Convert to fraction form
    530.44/793.74 = 312.80/x
  3. Step 3: Cross multiply
    530.44x = 793.74 × 312.80
  4. Step 4: Simplify right side
    530.44x = 248,281.87
  5. Step 5: Solve for x
    x = 248,281.87/530.44
  6. Step 6: Final answer
    x = 468.07

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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.