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Finding the Fourth Proportional to 530.15, 793.53 and 383.40

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Solution

The fourth proportional to 530.15, 793.53 and 383.40 is: 573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.15 : 793.53 = 383.40 : x
  2. Step 2: Convert to fraction form
    530.15/793.53 = 383.40/x
  3. Step 3: Cross multiply
    530.15x = 793.53 × 383.40
  4. Step 4: Simplify right side
    530.15x = 304,239.40
  5. Step 5: Solve for x
    x = 304,239.40/530.15
  6. Step 6: Final answer
    x = 573.88

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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.