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Finding the Fourth Proportional to 530.40, 795.45 and 324.21

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Solution

The fourth proportional to 530.40, 795.45 and 324.21 is: 486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.40 : 795.45 = 324.21 : x
  2. Step 2: Convert to fraction form
    530.40/795.45 = 324.21/x
  3. Step 3: Cross multiply
    530.40x = 795.45 × 324.21
  4. Step 4: Simplify right side
    530.40x = 257,892.84
  5. Step 5: Solve for x
    x = 257,892.84/530.40
  6. Step 6: Final answer
    x = 486.22

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Double scale
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Similar ratio
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1.5x scale

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.