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Finding the Fourth Proportional to 1,018.59, 1,526.50 and 530.65

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Solution

The fourth proportional to 1,018.59, 1,526.50 and 530.65 is: 795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018.59 : 1,526.50 = 530.65 : x
  2. Step 2: Convert to fraction form
    1,018.59/1,526.50 = 530.65/x
  3. Step 3: Cross multiply
    1,018.59x = 1,526.50 × 530.65
  4. Step 4: Simplify right side
    1,018.59x = 810,037.23
  5. Step 5: Solve for x
    x = 810,037.23/1,018.59
  6. Step 6: Final answer
    x = 795.25

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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.