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Finding the Fourth Proportional to 750.76, 1,036.68 and 530.20

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Solution

The fourth proportional to 750.76, 1,036.68 and 530.20 is: 732.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.76 : 1,036.68 = 530.20 : x
  2. Step 2: Convert to fraction form
    750.76/1,036.68 = 530.20/x
  3. Step 3: Cross multiply
    750.76x = 1,036.68 × 530.20
  4. Step 4: Simplify right side
    750.76x = 549,647.74
  5. Step 5: Solve for x
    x = 549,647.74/750.76
  6. Step 6: Final answer
    x = 732.12

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1.5x scale

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.