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Finding the Fourth Proportional to 530.90, 795.33 and 287.09

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Solution

The fourth proportional to 530.90, 795.33 and 287.09 is: 430.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.90 : 795.33 = 287.09 : x
  2. Step 2: Convert to fraction form
    530.90/795.33 = 287.09/x
  3. Step 3: Cross multiply
    530.90x = 795.33 × 287.09
  4. Step 4: Simplify right side
    530.90x = 228,331.29
  5. Step 5: Solve for x
    x = 228,331.29/530.90
  6. Step 6: Final answer
    x = 430.08

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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.