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Finding the Fourth Proportional to 993.14, 1,488.18 and 530.98

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Solution

The fourth proportional to 993.14, 1,488.18 and 530.98 is: 795.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.14 : 1,488.18 = 530.98 : x
  2. Step 2: Convert to fraction form
    993.14/1,488.18 = 530.98/x
  3. Step 3: Cross multiply
    993.14x = 1,488.18 × 530.98
  4. Step 4: Simplify right side
    993.14x = 790,193.82
  5. Step 5: Solve for x
    x = 790,193.82/993.14
  6. Step 6: Final answer
    x = 795.65

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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.