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Finding the Fourth Proportional to 507.34, 700.09 and 389.10

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Solution

The fourth proportional to 507.34, 700.09 and 389.10 is: 536.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.34 : 700.09 = 389.10 : x
  2. Step 2: Convert to fraction form
    507.34/700.09 = 389.10/x
  3. Step 3: Cross multiply
    507.34x = 700.09 × 389.10
  4. Step 4: Simplify right side
    507.34x = 272,405.02
  5. Step 5: Solve for x
    x = 272,405.02/507.34
  6. Step 6: Final answer
    x = 536.93

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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.