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Finding the Fourth Proportional to 1,133.66, 1,700.65 and 353.72

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Solution

The fourth proportional to 1,133.66, 1,700.65 and 353.72 is: 530.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.66 : 1,700.65 = 353.72 : x
  2. Step 2: Convert to fraction form
    1,133.66/1,700.65 = 353.72/x
  3. Step 3: Cross multiply
    1,133.66x = 1,700.65 × 353.72
  4. Step 4: Simplify right side
    1,133.66x = 601,547.06
  5. Step 5: Solve for x
    x = 601,547.06/1,133.66
  6. Step 6: Final answer
    x = 530.62

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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.