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Finding the Fourth Proportional to 670.21, 924.19 and 530.11

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Solution

The fourth proportional to 670.21, 924.19 and 530.11 is: 730.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.21 : 924.19 = 530.11 : x
  2. Step 2: Convert to fraction form
    670.21/924.19 = 530.11/x
  3. Step 3: Cross multiply
    670.21x = 924.19 × 530.11
  4. Step 4: Simplify right side
    670.21x = 489,919.97
  5. Step 5: Solve for x
    x = 489,919.97/670.21
  6. Step 6: Final answer
    x = 730.99

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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.